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Made up of two atoms.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Chemistry) (of a compound or molecule)
a. containing two atoms
b. containing two characteristic groups or atoms: ethylene glycol is a diatomic alcohol.
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
di•a•tom•ic(ˌdaɪ əˈtɒm ɪk)
1. having two atoms in the molecule.
2. containing two replaceable atoms or groups; binary.
di`at•o•mic′i•ty (-æt əˈmɪs ɪ ti) n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
|Adj.||1.||diatomic - of or relating to a molecule made up of two atoms; "a diatomic molecule"|
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.